FORMS(3) NetBSD Library Functions Manual FORMS(3)
NAMEfree_fieldtype, link_fieldtype, new_fieldtype, set_fieldtype_arg,
set_fieldtype_choice -- form library
LIBRARY
Curses Form Library (libform, -lform)
SYNOPSIS#include <form.h>intfree_fieldtype(FIELDTYPE *fieldtype);
FIELDTYPE *link_fieldtype(FIELDTYPE *type1, FIELDTYPE *type2);
FIELDTYPE *new_fieldtype(int (*field_check)(FIELD *, char *),
int (*char_check)(int, char *));
intset_fieldtype_arg(FIELDTYPE *fieldtype, char * (*make_args)(va_list *),
char * (*copy_args)(char *), void (*free_args)(char *));
intset_fieldtype_choice(FIELDTYPE *fieldtype,
int (*next_choice)(FIELD *, char *),
int (*prev_choice)(FIELD *, char *));
DESCRIPTION
The function free_fieldtype() frees the storage associated with the field
type and destroys it. The function link_fieldtype() links together the
two given field types to produce a new field type. A new field type can
be created by calling new_fieldtype() which requires pointers to two
functions which perform validation, the field_check function must vali-
date the field contents and return TRUE if they are acceptable and FALSE
if they are not. The char_check validates the character input into the
field, this function will be called for each character entered, if the
character can be entered into the field then char_check must return TRUE.
Neither field_check nor char_check may be NULL. The functions for han-
dling the field type arguments can be defined by using the
set_fieldtype_arg() function, the make_args function is used to create
new arguments for the fieldtype, the copy_args is used to copy the field-
type arguments to a new arguments structure and free_args is used to
destroy the fieldtype arguments and release any associated storage, none
of these function pointers may be NULL. The field type choice functions
can be set by calling set_fieldtype_choice(), the next_choice and
prev_choice specify the next and previous choice functions for the field
type. These functions must perform the necessary actions to select the
next or previous choice for the field, updating the field buffer if nec-
essary. The choice functions must return TRUE if the function succeeded
and FALSE otherwise.
RETURN VALUES
Functions returning pointers will return NULL if an error is detected.
The functions that return an int will return one of the following error
values:
E_OK The function was successful.
E_BAD_ARGUMENT The function was passed a bad argument.
E_CONNECTED The field is connected to a form.
SEE ALSOcurses(3), forms(3)NOTES
The header <form.h> automatically includes both <curses.h> and <eti.h>.
NetBSD 5.0.1 January 1, 2001 NetBSD 5.0.1

You can also request any man page by name and (optionally) by section:

Command:

Section:

Architecture:

Collection:

Use the DEFAULT collection to view manual pages
for third-party software.